comments:
Fresh-Necessary-7 posted on r/diyelectronics5w
https://a.co/d/081WIWgP There's a picture in one of the reviews that looks like it's the sticker off the back of rhe aolar panel that says max output 21.5v. Since its an 8.5 amp max capacity controller, should I try to find a power supply that can output as close to 8.5amps and 21.5 volts? I don't know exactly what I've got in the bin, but I think most of the power supplies I've got are either 9 or 12v and like 2 amps or something like that. Basically just spare power bricks from consumer grade electronics.